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The luster (or lustre) of a rock is a description of the way light interacts with the surface of a crystal, rock, or mineral. The term is also used to describe other items with a particular sheen.
The term ductile would be applied to this physical characteristic of such a material.
The word is luster.
Characteristic, trait.
The term "luster" refers to the way a mineral's surface reflects light.
A waxy luster gives minerals a shiny appearance.
In geology, luster refers to the appearance of a mineral in respect to the reflection of light. Luster is not a term used to define the appearance of rock.
Hexagonal
symmetry
The luster (or lustre) of a rock is a description of the way light interacts with the surface of a crystal, rock, or mineral. The term is also used to describe other items with a particular sheen.
This is called the luster of the mineral.The luster of a mineral is the way its surface reflects light. Most terms used to describe luster are self-explanatory: metallic, earthy, waxy, greasy, vitreous (glassy), adamantine (or brilliant, as in a faceted diamond).
The term ductile would be applied to this physical characteristic of such a material.
As a rock, gabbro does not have a luster. Luster is a term used to characterize a mineral.
Modus operandi, commonly referred to as M.O., is the term used to describe the characteristic method of operation of a criminal. It refers to the specific techniques or patterns that a criminal uses when committing a crime.
Acids
That would be the degree of luster.
Pedal to the metal.